A women’s jacket created for alpine, ice and expedition climbing, the Alpha IS is the single-layer solution for severe alpine environments. The GORE-TEX® outer offers durable waterproof, windproof, breathable protection. Thermatek™, a DWR treated continuous filament synthetic, provides warmth without absorbing moisture. The combination results in a jacket that provides comprehensive weather and thermal protection at a weight 12% lighter than the equivalent midlayer and hardshell system.